Magnetic Ordering of Focused-Ion-Beam Structured Cobalt-Platinum Dots for Field-Coupled Computing

Author

Becherer, Markus ; Csaba, Gyöorgy ; Porod, Wolfgang ; Emling, Rainer ; Lugli, Paolo ; Schmitt-Landsiedel, Doris

Author_Institution

Inst. for Tech. Electron., Tech. Univ. of Munich, Munich

Volume

7

Issue

3

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

316

Lastpage

320

Abstract

This paper presents an experimental and computational study of dipolar ordering phenomena in ion-beam patterned Co/Pt multilayers. The fabrication and the patterning of the layers were chosen to achieve single-domain dots, which show strong magnetic coupling and are uniform in their magnetic properties. We find that antiferromagnetic-like ordering can extend to as many as several hundred adjacent dots. Micromagnetic simulations reproduce the experimentally observed ordering and suggest that such multilayers are promising candidates for field-coupled computing devices.

Keywords

antiferromagnetic materials; cobalt; ferromagnetic materials; focused ion beam technology; magnetic multilayers; platinum; Co-Pt; antiferromagnetic-like ordering; dipolar ordering; ferromagnetic dots; field-coupled computing; focused-ion-beam patterning; magnetic coupling; micromagnetic simulations; multilayers; single-domain dots; Cobalt/Platinum multilayers; Cobalt/platinum multilayers; FIB patterning; Magnetic logic devices; field coupling; field-coupling; focused ion beam (FIB) patterning; magnetic dipolar ordering; magnetic logic devices;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2008.917796

Filename

4445643